an existing connection; a significant association between or among things: the relation between cause and effect.
relations. the various connections between peoples, countries, etc.: foreign relations. the various connections in which persons are brought together: business and social relations. sexual intercourse.
the mode or kind of connection between one person and another, between an individual and God, etc.
connection between persons by blood or marriage.
a person who is related by blood or marriage; relative: his wife's relations.